16897487 has 8 divisors (see below), whose sum is σ = 17335296. Its totient is φ = 16463032.

The previous prime is 16897483. The next prime is 16897553. The reversal of 16897487 is 78479861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16897487 - 2² = 16897483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16897481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11678 + ... + 13044.

It is an arithmetic number, because the mean of its divisors is an integer number (2166912).

Almost surely, 2^16897487 is an apocalyptic number.

16897487 is a deficient number, since it is larger than the sum of its proper divisors (437809).

16897487 is a wasteful number, since it uses less digits than its factorization.

16897487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677.

The product of its digits is 677376, while the sum is 50.

The square root of 16897487 is about 4110.6553005573. The cubic root of 16897487 is about 256.6102739622.

The spelling of 16897487 in words is "sixteen million, eight hundred ninety-seven thousand, four hundred eighty-seven".